Well, if they all supposedly beamed down and did not take any shuttles, well, there would not be any shuttles to fly back to the ship, thus, you're still "stranded".
If, on the other hand, a few crew piloted shuttles to the ground, yes, that would negate the problems getting back. Now, we discovered during Decker's suicide run with the shuttle that the doors can at least be opened (from inside the bay) within the shuttle. But we can't say for sure about a shuttle outside
the ship. A deck controller might be required.
So, we have the same problem as with the transporter. On the other hand, if the colony has a transporter station that can transmit and well as simply receive, then someone could return, providing the ship's shields are down.